Home / 31,921.48-47,882.20-8,547.32

Finding the Fourth Proportional to 31,921.48, 47,882.20 and 8,547.32

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Solution

The fourth proportional to 31,921.48, 47,882.20 and 8,547.32 is: 12,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,921.48 : 47,882.20 = 8,547.32 : x
  2. Step 2: Convert to fraction form
    31,921.48/47,882.20 = 8,547.32/x
  3. Step 3: Cross multiply
    31,921.48x = 47,882.20 × 8,547.32
  4. Step 4: Simplify right side
    31,921.48x = 409,264,485.70
  5. Step 5: Solve for x
    x = 409,264,485.70/31,921.48
  6. Step 6: Final answer
    x = 12,820.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.